Structural basis of sequence-specific RNA recognition by the antiviral factor APOBEC3G.
Structural basis of sequence-specific RNA recognition by the antiviral factor APOBEC3G.
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DOI:
10.1038/s41467-022-35201-9
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发表时间:
2022-12-05
影响因子:
16.6
通讯作者:
Chen, Xiaojiang S.
中科院分区:
文献类型:
--
作者:
Yang, Hanjing;Kim, Kyumin;Li, Shuxing;Pacheco, Josue;Chen, Xiaojiang S.
An essential step in restricting HIV infectivity by the antiviral factor APOBEC3G is its incorporation into progeny virions via binding to HIV RNA. However, the mechanism of APOBEC3G capturing viral RNA is unknown. Here, we report crystal structures of a primate APOBEC3G bound to different types of RNAs, revealing that APOBEC3G specifically recognizes unpaired 5’-AA-3’ dinucleotides, and to a lesser extent, 5’-GA-3’ dinucleotides. APOBEC3G binds to the common 3’A in the AA/GA motifs using an aromatic/hydrophobic pocket in the non-catalytic domain. It binds to the 5’A or 5’G in the AA/GA motifs using an aromatic/hydrophobic groove conformed between the non-catalytic and catalytic domains. APOBEC3G RNA binding property is distinct from that of the HIV nucleocapsid protein recognizing unpaired guanosines. Our findings suggest that the sequence-specific RNA recognition is critical for APOBEC3G virion packaging and restricting HIV infectivity. Interaction between APOBEC3G and RNA is critical for its antiviral function. Here, the authors report four co-crystal structures of rhesus macaque APOBEC3G and RNA, demonstrating unpaired AA and GA dinucleotide motifs are preferentially recognized.
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DOI:
10.3390/v13030497
发表时间:
2021-03-17
期刊:
Viruses
影响因子:
--
作者:
Chen XS
通讯作者:
Chen XS
影响因子:
16.6
作者:
Bohn JA;Thummar K;York A;Raymond A;Brown WC;Bieniasz PD;Hatziioannou T;Smith JL
通讯作者:
Smith JL
影响因子:
21.8
作者:
通讯作者:
--
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
3.7
作者:
Belanger, Kasandra;Langlois, Marc-Andre
通讯作者:
Langlois, Marc-Andre